Question

malathion and copper sulfate are commonly used​

Answer 1

Answer:

it is used as insectisides

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Explanation:

Answer 2

Copper sulfate, also known as ‘blue stone’ or ‘blue vitriol’, is a chemical compound that is used in a wide range of industries. The basic chemical formula of blue vitriol is ‘CuSO4‘, but the salt exists as a series of different compounds, depending on the degree of hydration. ‘Chalcocite’, the anhydrous form of copper sulfate, occurs as a rare mineral and exists as a pale green or grayish-white powder.

The various hydrated forms of copper sulfate include trihydrates, pentahydrates, and heptahydrates. However, copper sulfate pentahydrate (CuSO4.5H2O) is the most commonly found salt. It is bright blue in color and is known as ‘chalcanthite’. This color of the crystals is due to the presence of water of crystallization, and is the best way to distinguish between the anhydrous and hydrated forms.

Copper sulfate can be prepared in the laboratory by reacting various compounds of copper (II) with sulfuric acid. However, it is commercially available on a large-scale basis, and is an economic source of Cu. Copper sulfate pentahydrate readily dissolves in water and is also soluble in methanol, glycerol, and to some extent in ethanol. When the blue crystals of copper sulfate are heated in an open flame, they get dehydrated and turn grayish white.